Troubleshooting Cisco UCS Chassis: F0411 Thermal condition on chassis is upper-non-recoverable

Today I experienced an issue with a Cisco UCS chassis. The error in question was “F0411 Thermal condition on chassis is upper-non-recoverable”.  F0411 Thermal condition would make the chassis go red within equipment under the Cisco Unified Computing System Manager, then from there it would go yellow, with the fans stating they were “inoperable” even though they weren’t.  This process continually went back and fourth between yellow and red thousands of times. While the alert was concerning to see, it’s important to note the UCS Chassis itself was functioning normally with no issues.  Concerning to the eye at the very least, and worth investigating. Upon inspection of the device, everything was working normally; however, the fans were running full blast. To resolve the issue I opened a ticket with Cisco TAC.

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